PartsTable
Technical Data Sheet
27FH-624 ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.318 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN, lubrication: SOLUBLE LUBRICANT, temp_rating: 450.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-982-4908, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
27FH-624
NSN: 5310-00-982-4908
FSC: 5310
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.318 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
lubricationSOLUBLE LUBRICANT
temp_rating450.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
countersink_angle88.0 DEGREES NOMINAL NUT
surface_treatmentCADMIUM OVERALL
width_across_flats0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
NSN5310-00-982-4908
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 27FH-624 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
NUT HEIGHT: 0.318 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
NOMINAL THREAD SIZE: 0.375 INCHES IN
MATERIAL: STEEL OVERALL
SURFACE TREATMENT: CADMIUM OVERALL
LUBRICATION: SOLUBLE LUBRICANT
BEARING SURFACE FINISH: 125.0 MICROINCHES
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
NUT HEIGHT0.318 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
NOMINAL THREAD SIZE0.375 INCHES IN
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
LUBRICATIONSOLUBLE LUBRICANT
BEARING SURFACE FINISH125.0 MICROINCHES
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD CLASS3B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 33
385331Interchangeable
interchangeable cross-reference
interchangeable
GGG-T-581Interchangeable
interchangeable cross-reference
interchangeable
GGG-T-581 TY1CL1Interchangeable
interchangeable cross-reference
interchangeable
5310PL0576846Interchangeable
interchangeable cross-reference
interchangeable
3897Interchangeable
interchangeable cross-reference
interchangeable
MS20365-624Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 27FH-624?
27FH-624 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 27FH-624?
There are 33 known substitutes for 27FH-624: 385331, GGG-T-581, GGG-T-581 TY1CL1 and 30 more. Substitute compatibility should be verified for your specific system.
Is 27FH-624 still available?
27FH-624 is currently cancelled.
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